Maven Dependency Configuration

Add the following dependencies to your project's pom.xml file. Ensure version compatibility to avoid errors.

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.1.4.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>1.6.0.RELEASE</version>
</dependency>
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.7.3</version>
</dependency>

Check Maven repositories like https://mvnrepository.com/ for compatible versions.

Redis Environment Setup

Define Redis connection parameters in a properties file, such as redis-config.properties.

redis.host=127.0.0.1
redis.port=6379
redis.password=
redis.pool.maxIdle=20
redis.pool.minIdle=0
redis.pool.maxTotal=100
redis.pool.maxWait=-1
redis.pool.testOnBorrow=true
redis.database=1
redis.timeout=3000

Spring XML Configuration

Configure Spring beans in your application context file.

<context:property-placeholder location="classpath:redis-config.properties" ignore-unresolvable="true" />

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
    <property name="maxTotal" value="${redis.pool.maxTotal}" />
    <property name="maxIdle" value="${redis.pool.maxIdle}" />
    <property name="minIdle" value="${redis.pool.minIdle}" />
    <property name="maxWaitMillis" value="${redis.pool.maxWait}" />
    <property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
</bean>

<bean id="redisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
    <property name="hostName" value="${redis.host}" />
    <property name="port" value="${redis.port}" />
    <property name="password" value="${redis.password}" />
    <property name="database" value="${redis.database}" />
    <property name="poolConfig" ref="jedisPoolConfig" />
    <property name="timeout" value="${redis.timeout}" />
</bean>

<bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
    <property name="connectionFactory" ref="redisConnectionFactory" />
    <property name="keySerializer">
        <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
    </property>
    <property name="hashKeySerializer">
        <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
    </property>
    <property name="enableTransactionSupport" value="true" />
</bean>

Redis Utility Class Implemantation

Create a utility class to intercat with Redis.

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

@Component
public class RedisService {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public void storeValue(String key, Object value) {
        redisTemplate.opsForValue().set(key, value);
    }

    public Object retrieveValue(String key) {
        return redisTemplate.opsForValue().get(key);
    }
}

Note that with this configuration, stored value are limited to strings.